2026 ICD-10-CM Diagnosis Code C79.51Secondary malignant neoplasm of bone
ICD-10-CM Codes›C00–D49›C76-C80›C79
- Billable — Valid for Submission
- Chronic Condition
ICD-10-CM C79.51
C79.51 is a billable ICD-10-CM diagnosis code for secondary malignant neoplasm of bone. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 456 through 458, 542 through 544. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Secondary malignancies.
Code Identity
ICD-10-CM Code
C79.51
Billable Status
Yes — Valid for Submission
Code Describes
Secondary malignant neoplasm of bone
Short Description
Secondary malignant neoplasm of bone
Same as the full description in the CMS dataset.
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Malignant neoplasm of bone, connective tissue, skin and breast
- Malignant neoplasm of calcaneum
- Malignant neoplasm of carpal bone - hamate
- Malignant neoplasm of carpal bone - lunate
- Malignant neoplasm of carpal bone - pisiform
- Malignant neoplasm of carpal bone - scaphoid
- Malignant neoplasm of carpal bone - trapezium
- Malignant neoplasm of carpal bone - trapezoid
- Malignant neoplasm of hard palate
- Malignant neoplasm of intermediate cuneiform
- Malignant neoplasm of lateral cuneiform
- Malignant neoplasm of long bone of lower leg
- Malignant neoplasm of malar bone
- Malignant neoplasm of medial cuneiform
- Malignant neoplasm of metacarpal bones
- Malignant neoplasm of metatarsal bone of foot
- Malignant neoplasm of nasal septum
- Malignant neoplasm of nasal skeleton
- Malignant neoplasm of navicular
- Malignant neoplasm of phalanges of foot
- Malignant neoplasm of phalanges of hand
- Malignant neoplasm of thoracic vertebral column
- Malignant neoplasm of vertebra
- Mass of parietal bone of skull
- Metastatic adenocarcinoma to bone
- Metastatic carcinoma to bone of clavicle
- Metastatic carcinoma to bone of lower limb
- Metastatic carcinoma to bone of rib
- Metastatic carcinoma to bone of sternum
- Metastatic carcinoma to bone of upper limb
- Metastatic carcinoma to bone, connective tissue, skin and breast
- Metastatic carcinoma to breast
- Metastatic carcinoma to pelvic bones, sacrum and coccyx
- Metastatic carcinoma to scapula
- Metastatic malignant neoplasm to acromion
- Metastatic malignant neoplasm to articular cartilage
- Metastatic malignant neoplasm to bone
- Metastatic malignant neoplasm to bone of face
- Metastatic malignant neoplasm to bone of lower limb
- Metastatic malignant neoplasm to bone of skull
- Metastatic malignant neoplasm to bone of upper limb
- Metastatic malignant neoplasm to calcaneus
- Metastatic malignant neoplasm to carpal bone
- Metastatic malignant neoplasm to cervical vertebral column
- Metastatic malignant neoplasm to cheek
- Metastatic malignant neoplasm to clavicle
- Metastatic malignant neoplasm to coccyx
- Metastatic malignant neoplasm to cuboid
- Metastatic malignant neoplasm to ethmoid bone
- Metastatic malignant neoplasm to femur
- Metastatic malignant neoplasm to fibula
- Metastatic malignant neoplasm to first cuneiform bone of foot
- Metastatic malignant neoplasm to forearm
- Metastatic malignant neoplasm to frontal bone
- Metastatic malignant neoplasm to hamate bone
- Metastatic malignant neoplasm to hand
- Metastatic malignant neoplasm to hard palate
- Metastatic malignant neoplasm to ilium
- Metastatic malignant neoplasm to ischium
- Metastatic malignant neoplasm to long bone of lower limb
- Metastatic malignant neoplasm to long bone of upper limb
- Metastatic malignant neoplasm to lower leg
- Metastatic malignant neoplasm to lumbar vertebral column
- Metastatic malignant neoplasm to lunate bone
- Metastatic malignant neoplasm to mandible
- Metastatic malignant neoplasm to maxilla
- Metastatic malignant neoplasm to metacarpal bone
- Metastatic malignant neoplasm to metatarsal bone
- Metastatic malignant neoplasm to nasal bone
- Metastatic malignant neoplasm to navicular bone of foot
- Metastatic malignant neoplasm to nose
- Metastatic malignant neoplasm to occipital bone
- Metastatic malignant neoplasm to palate
- Metastatic malignant neoplasm to palatine bone
- Metastatic malignant neoplasm to parietal bone
- Metastatic malignant neoplasm to patella
- Metastatic malignant neoplasm to pelvic bone
- Metastatic malignant neoplasm to phalanx of foot
- Metastatic malignant neoplasm to phalanx of hand
- Metastatic malignant neoplasm to pisiform bone of wrist region
- Metastatic malignant neoplasm to pubis
- Metastatic malignant neoplasm to radius
- Metastatic malignant neoplasm to rib
- Metastatic malignant neoplasm to sacrococcygeal region
- Metastatic malignant neoplasm to sacrum
- Metastatic malignant neoplasm to scaphoid bone
- Metastatic malignant neoplasm to scapula
- Metastatic malignant neoplasm to second cuneiform bone of foot
- Metastatic malignant neoplasm to septum of nose
- Metastatic malignant neoplasm to short bone of lower limb
- Metastatic malignant neoplasm to short bone of upper limb
- Metastatic malignant neoplasm to sphenoid bone
- Metastatic malignant neoplasm to sternum
- Metastatic malignant neoplasm to talus
- Metastatic malignant neoplasm to tarsal bone
- Metastatic malignant neoplasm to temporal bone
- Metastatic malignant neoplasm to thigh
- Metastatic malignant neoplasm to third cuneiform bone of foot
- Metastatic malignant neoplasm to thoracic vertebral column
- Metastatic malignant neoplasm to tibia
- Metastatic malignant neoplasm to trapezium
- Metastatic malignant neoplasm to trapezoid bone
- Metastatic malignant neoplasm to ulna
- Metastatic malignant neoplasm to vertebral column
- Metastatic malignant neoplasm to vomer
- Metastatic malignant neoplasm to zygomatic bone
- Metastatic nuclear protein in testis associated carcinoma to bone
- Metastatic osteosarcoma to articular cartilage of clavicle
- Metastatic osteosarcoma to articular cartilage of rib
- Metastatic osteosarcoma to articular cartilage of sternum
- Metastatic osteosarcoma to articular cartilage of vertebra
- Metastatic osteosarcoma to bone
- Metastatic osteosarcoma to bone of clavicle
- Metastatic osteosarcoma to bone of head
- Metastatic osteosarcoma to bone of rib
- Metastatic osteosarcoma to bone of sternum
- Metastatic osteosarcoma to bone of vertebra
- Metastatic squamous cell carcinoma to bone
- Neoplasm of acromion
- Neoplasm of calcaneus
- Neoplasm of coccyx
- Neoplasm of cuboid
- Neoplasm of ethmoid bone
- Neoplasm of first cuneiform bone of foot
- Neoplasm of frontal bone
- Neoplasm of hamate bone
- Neoplasm of ilium
- Neoplasm of ischium
- Neoplasm of lunate bone
- Neoplasm of metacarpal bone
- Neoplasm of metatarsal bone
- Neoplasm of nasal bone
- Neoplasm of navicular bone of foot
- Neoplasm of occipital bone
- Neoplasm of palatine bone
- Neoplasm of parietal bone
- Neoplasm of patella
- Neoplasm of phalanx of foot
- Neoplasm of phalanx of hand
- Neoplasm of pisiform bone of wrist region
- Neoplasm of pubis
- Neoplasm of scaphoid bone
- Neoplasm of second cuneiform bone of foot
- Neoplasm of sphenoid bone
- Neoplasm of talus
- Neoplasm of third cuneiform bone of foot
- Neoplasm of trapezium
- Neoplasm of trapezoid bone
- Neoplasm of vomer
- Neoplasm of zygomatic bone
- NUT carcinoma
- Osteosarcoma of articular cartilage of clavicle
- Osteosarcoma of articular cartilage of rib
- Osteosarcoma of articular cartilage of sternum
- Osteosarcoma of articular cartilage of vertebra
- Osteosarcoma of bone of clavicle
- Osteosarcoma of bone of head
- Osteosarcoma of bone of rib
- Osteosarcoma of bone of upper limb
- Osteosarcoma of bone of vertebra
- Osteosarcoma of sternum
- Pathologic fracture of bone at site of metastatic neoplasm
- Pathologic fracture of vertebra at site of metastatic neoplasm
- Pathologic fracture of vertebra at site of neoplasm
- Pathological fracture of vertebra
- Sarcoma of clavicle
- Sarcoma of rib
- Sarcoma of sternum
- Sarcoma of vertebra
- Secondary osteosarcoma following treatment or disease
- Tumor invades bone
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
CCSR NEO070
Secondary malignancies
Default principal diagnosis: inpatient Yes · outpatient Yes
Clinical InformationClinical
Clavicle
a bone on the ventral side of the shoulder girdle, which in humans is commonly called the collar bone.Coccyx
the last bone in the vertebral column in tailless primates considered to be a vestigial tail-bone consisting of three to five fused vertebrae.Costal Cartilage
bars of hyaline cartilage extending from the anterior ends of the upper ribs. they attach to the sternum directly or indirectly by connecting to upper costal cartilage that attaches to the sternum. costal cartilages extend the ribs anteriorly and contribute to the enhanced elasticity of the thoracic wall.Ischium
one of three bones that make up the coxal bone of the pelvic girdle. in tetrapods, it is the part of the pelvis that projects backward on the ventral side, and in primates, it bears the weight of the sitting animal.Cementoma
an odontogenic fibroma in which cells have developed into cementoblasts and which consists largely of cementum.Mandible
the largest and strongest bone of the face constituting the lower jaw. it supports the lower teeth.Nucleus Pulposus
fibrocartilage inner core of the intervertebral disc. prolapsed or bulged nucleus pulposus leads to intervertebral disc displacement while proliferation of cells in the nucleus pulposus is associated with intervertebral disc degeneration.Chondromalacia Patellae
a degeneration of the articular cartilage of the patella, caused by a decrease in sulfated mucopolysaccharides in the ground substance. when accompanied by pain, it is sometimes considered part of or confused with patellofemoral pain syndrome.Patella
the flat, triangular bone situated at the anterior part of the knee.Patella Fracture
fractures of the patella.Patellar Dislocation
displacement of the patella from the femoral groove.Patellar Ligament
a band of fibrous tissue that attaches the apex of the patella to the lower part of the tubercle of the tibia. the ligament is actually the caudal continuation of the common tendon of the quadriceps femoris. the patella is embedded in that tendon. as such, the patellar ligament can be thought of as connecting the quadriceps femoris tendon to the tibia, and therefore it is sometimes called the patellar tendon.Pubic Bone
a bone that forms the lower and anterior part of each side of the hip bone.Sternum
a long, narrow, and flat bone commonly known as breastbone occurring in the midsection of the anterior thoracic segment or chest region, which stabilizes the rib cage and serves as the point of origin for several muscles that move the arms, head, and neck.
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
| Site | Malig. Primary | Malig. Secondary | Ca in situ | Benign | Uncertain | Unspec. |
|---|---|---|---|---|---|---|
| alveolar › ridge or process | C41.1 | C79.51 | – | D16.5 | D48.0 | D49.2 |
| alveolar › ridge or process › lower | C41.1 | C79.51 | – | D16.5 | D48.0 | D49.2 |
| alveolar › ridge or process › upper | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| atlas | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| bone (periosteum) | C41.9 | C79.51 | – | D16.9 | D48.0 | D49.2 |
| bone (periosteum) › acetabulum | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › ankle | C40.3 | C79.51 | – | D16.3 | – | – |
| bone (periosteum) › arm NEC | C40.0 | C79.51 | – | D16.0 | – | – |
| bone (periosteum) › astragalus | C40.3 | C79.51 | – | D16.3 | – | – |
| bone (periosteum) › atlas | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| bone (periosteum) › axis | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| bone (periosteum) › back NEC | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| bone (periosteum) › calcaneus | C40.3 | C79.51 | – | D16.3 | – | – |
| bone (periosteum) › calvarium | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › carpus (any) | C40.1 | C79.51 | – | D16.1 | – | – |
| bone (periosteum) › cartilage NEC | C41.9 | C79.51 | – | D16.9 | D48.0 | D49.2 |
| bone (periosteum) › clavicle | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| bone (periosteum) › clivus | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › coccygeal vertebra | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › coccyx | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › costal cartilage | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| bone (periosteum) › costovertebral joint | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| bone (periosteum) › cranial | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › cuboid | C40.3 | C79.51 | – | D16.3 | – | – |
| bone (periosteum) › cuneiform | C41.9 | C79.51 | – | D16.9 | D48.0 | D49.2 |
| bone (periosteum) › elbow | C40.0 | C79.51 | – | D16.0 | – | – |
| bone (periosteum) › ethmoid (labyrinth) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › face | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › femur (any part) | C40.2 | C79.51 | – | D16.2 | – | – |
| bone (periosteum) › fibula (any part) | C40.2 | C79.51 | – | D16.2 | – | – |
| bone (periosteum) › finger (any) | C40.1 | C79.51 | – | D16.1 | – | – |
| bone (periosteum) › foot | C40.3 | C79.51 | – | D16.3 | – | – |
| bone (periosteum) › forearm | C40.0 | C79.51 | – | D16.0 | – | – |
| bone (periosteum) › frontal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › hand | C40.1 | C79.51 | – | D16.1 | – | – |
| bone (periosteum) › heel | C40.3 | C79.51 | – | D16.3 | – | – |
| bone (periosteum) › hip | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › humerus (any part) | C40.0 | C79.51 | – | D16.0 | – | – |
| bone (periosteum) › hyoid | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › ilium | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › innominate | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › intervertebral cartilage or disc | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| bone (periosteum) › ischium | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › jaw (lower) | C41.1 | C79.51 | – | D16.5 | D48.0 | D49.2 |
| bone (periosteum) › knee | C40.2 | C79.51 | – | D16.2 | – | – |
| bone (periosteum) › leg NEC | C40.2 | C79.51 | – | D16.2 | – | – |
| bone (periosteum) › limb NEC | C40.9 | C79.51 | – | D16.9 | – | – |
| bone (periosteum) › limb NEC › lower (long bones) | C40.2 | C79.51 | – | D16.2 | – | – |
| bone (periosteum) › limb NEC › lower (long bones) › short bones | C40.3 | C79.51 | – | D16.3 | – | – |
| bone (periosteum) › limb NEC › upper (long bones) | C40.0 | C79.51 | – | D16.0 | – | – |
| bone (periosteum) › limb NEC › upper (long bones) › short bones | C40.1 | C79.51 | – | D16.1 | – | – |
| bone (periosteum) › malar | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › mandible | C41.1 | C79.51 | – | D16.5 | D48.0 | D49.2 |
| bone (periosteum) › mastoid | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › maxilla, maxillary (superior) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › maxilla, maxillary (superior) › inferior | C41.1 | C79.51 | – | D16.5 | D48.0 | D49.2 |
| bone (periosteum) › metacarpus (any) | C40.1 | C79.51 | – | D16.1 | – | – |
| bone (periosteum) › metatarsus (any) | C40.3 | C79.51 | – | D16.3 | – | – |
| bone (periosteum) › navicular | C40.3 | C79.51 | – | – | – | – |
| bone (periosteum) › navicular › ankle | C40.3 | C79.51 | – | – | – | – |
| bone (periosteum) › navicular › hand | C40.1 | C79.51 | – | – | – | – |
| bone (periosteum) › nose, nasal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › occipital | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › orbit | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › parietal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › patella | C40.2 | C79.51 | – | – | – | – |
| bone (periosteum) › pelvic | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › phalanges | C40.3 | C79.51 | – | – | – | – |
| bone (periosteum) › phalanges › foot | C40.3 | C79.51 | – | – | – | – |
| bone (periosteum) › phalanges › hand | C40.1 | C79.51 | – | – | – | – |
| bone (periosteum) › pubic | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › radius (any part) | C40.0 | C79.51 | – | D16.0 | – | – |
| bone (periosteum) › rib | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| bone (periosteum) › sacral vertebra | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › sacrum | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › scaphoid › of ankle | C40.3 | C79.51 | – | – | – | – |
| bone (periosteum) › scaphoid › of hand | C40.1 | C79.51 | – | – | – | – |
| bone (periosteum) › scapula (any part) | C40.0 | C79.51 | – | D16.0 | – | – |
| bone (periosteum) › sella turcica | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › shoulder | C40.0 | C79.51 | – | D16.0 | – | – |
| bone (periosteum) › skull | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › sphenoid | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › spine, spinal (column) | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| bone (periosteum) › spine, spinal (column) › coccyx | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › spine, spinal (column) › sacrum | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › sternum | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| bone (periosteum) › tarsus (any) | C40.3 | C79.51 | – | – | – | – |
| bone (periosteum) › temporal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › thumb | C40.1 | C79.51 | – | – | – | – |
| bone (periosteum) › tibia (any part) | C40.2 | C79.51 | – | – | – | – |
| bone (periosteum) › toe (any) | C40.3 | C79.51 | – | – | – | – |
| bone (periosteum) › trapezium | C40.1 | C79.51 | – | – | – | – |
| bone (periosteum) › trapezoid | C40.1 | C79.51 | – | – | – | – |
| bone (periosteum) › turbinate | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › ulna (any part) | C40.0 | C79.51 | – | D16.0 | – | – |
| bone (periosteum) › unciform | C40.1 | C79.51 | – | – | – | – |
| bone (periosteum) › vertebra (column) | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| bone (periosteum) › vertebra (column) › coccyx | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › vertebra (column) › sacrum | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| bone (periosteum) › vomer | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| bone (periosteum) › wrist | C40.1 | C79.51 | – | – | – | – |
| bone (periosteum) › xiphoid process | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| bone (periosteum) › zygomatic | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| calvarium | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| carpus (any bone) | C40.1 | C79.51 | – | D16.1 | – | – |
| cartilage (articular) (joint) NEC [See Also: Neoplasm, bone] | C41.9 | C79.51 | – | D16.9 | D48.0 | D49.2 |
| cartilage (articular) (joint) NEC [See Also: Neoplasm, bone] › costal | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| cartilage (articular) (joint) NEC [See Also: Neoplasm, bone] › ensiform | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| cartilage (articular) (joint) NEC [See Also: Neoplasm, bone] › intervertebral | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| cartilage (articular) (joint) NEC [See Also: Neoplasm, bone] › rib | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| cartilage (articular) (joint) NEC [See Also: Neoplasm, bone] › semilunar (knee) | C40.2 | C79.51 | – | D16.2 | D48.0 | D49.2 |
| clavicle | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| clivus | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| coccygeal › vertebra | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| coccyx | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| costal cartilage | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| costovertebral joint | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| disc, intervertebral | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| ensiform cartilage | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| ethmoid (sinus) › bone or labyrinth | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| fibula (any part) | C40.2 | C79.51 | – | D16.2 | – | – |
| frontal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| frontal › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| humerus (any part) | C40.0 | C79.51 | – | D16.0 | – | – |
| ilium | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| intervertebral cartilage or disc | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| ischium | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| jaw › bone | C41.1 | C79.51 | – | D16.5 | D48.0 | D49.2 |
| jaw › bone › lower | C41.1 | C79.51 | – | D16.5 | – | – |
| jaw › bone › upper | C41.0 | C79.51 | – | D16.4 | – | – |
| joint NEC [See Also: Neoplasm, bone] | C41.9 | C79.51 | – | D16.9 | D48.0 | D49.2 |
| joint NEC [See Also: Neoplasm, bone] › acromioclavicular | C40.0 | C79.51 | – | D16.0 | – | – |
| joint NEC [See Also: Neoplasm, bone] › costovertebral | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| joint NEC [See Also: Neoplasm, bone] › sternocostal | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| joint NEC [See Also: Neoplasm, bone] › temporomandibular | C41.1 | C79.51 | – | D16.5 | D48.0 | D49.2 |
| malar | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| mandible | C41.1 | C79.51 | – | D16.5 | D48.0 | D49.2 |
| mandible › alveolar › ridge or process | C41.1 | C79.51 | – | D16.5 | D48.0 | D49.2 |
| mastoid (air cells) (antrum) (cavity) › bone or process | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| maxilla, maxillary (superior) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| maxilla, maxillary (superior) › alveolar › ridge or process (carcinoma) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| maxilla, maxillary (superior) › carcinoma | C03.0 | C79.51 | – | – | – | – |
| meniscus, knee joint (lateral) (medial) | C40.2 | C79.51 | – | D16.2 | D48.0 | D49.2 |
| metacarpus (any bone) | C40.1 | C79.51 | – | D16.1 | – | – |
| metatarsus (any bone) | C40.3 | C79.51 | – | D16.3 | – | – |
| nose, nasal › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| nose, nasal › turbinate (mucosa) › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| nucleus pulposus | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| occipital | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| occipital › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| orbit › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| parietal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| parietal › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| patella | C40.2 | C79.51 | – | – | – | – |
| pelvis, pelvic › bone | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| phalanges | C40.3 | C79.51 | – | D16.3 | – | – |
| phalanges › foot | C40.3 | C79.51 | – | D16.3 | – | – |
| phalanges › hand | C40.1 | C79.51 | – | D16.1 | – | – |
| pubic bone | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| radius (any part) | C40.0 | C79.51 | – | D16.0 | – | – |
| rib | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| sacrococcyx, sacrococcygeal | C76.3 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| sacrum, sacral (vertebra) | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| scapula (any part) | C40.0 | C79.51 | – | D16.0 | – | – |
| sella turcica › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| semilunar cartilage (knee) | C40.2 | C79.51 | – | D16.2 | D48.0 | D49.2 |
| sinus (accessory) › bone (any) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| skeleton, skeletal NEC | C41.9 | C79.51 | – | D16.9 | D48.0 | D49.2 |
| skull | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| sphenoid › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| spine, spinal (column) | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| spine, spinal (column) › coccyx | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| spine, spinal (column) › lumbosacral | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| spine, spinal (column) › sacrum | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| sternum | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
| symphysis pubis | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| tarsus (any bone) | C40.3 | C79.51 | – | D16.3 | – | – |
| temporal | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| temporal › bone | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| tibia (any part) | C40.2 | C79.51 | – | D16.2 | – | – |
| turbinate (bone) | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| ulna (any part) | C40.0 | C79.51 | – | D16.0 | – | – |
| vertebra (column) | C41.2 | C79.51 | – | D16.6 | D48.0 | D49.2 |
| vertebra (column) › coccyx | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| vertebra (column) › sacrum | C41.4 | C79.51 | – | D16.8 | D48.0 | D49.2 |
| vomer | C41.0 | C79.51 | – | D16.4 | D48.0 | D49.2 |
| xiphoid process | C41.3 | C79.51 | – | D16.7 | D48.0 | D49.2 |
Patient EducationClinical
Bone Cancer
Cancer that starts in a bone is uncommon. Cancer that has spread to the bone from another part of the body is more common.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert C79.51 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.
Questions About C79.51Overview
Is C79.51 (Secondary malignant neoplasm of bone and bone marrow) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report secondary malignant neoplasm of bone on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does C79.51 group to?
When secondary malignant neoplasm of bone is the principal diagnosis on an inpatient stay, it groups to MS-DRG 456, 457, 458, 542, 543, 544, with relative weights from 0.7546 to 8.4034 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of C79.51?
Under the General Equivalence Mappings, secondary malignant neoplasm of bone converts to ICD-9-CM 198.5 (secondary malig neo bone). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
